Scoop-att aching means fob gbading and excavating machines



P. M. CADWELL.

SCOOP ATTACHING MEANS FOR GRADING AND EXCAVATING MACHINES.

APPLICATION FILED AUGrS 1920.

1,410,162. Patented Mar. 21, 1922.

NWIIIIII iiifiiiilml jfiflezzgza zz PM a 6 A UNITED STATES rnmms m.GADWELL, or MALVERN, IOWA, ASSIGNOR T0 PHINEAS M. onn'w'nnr;Am)

PATENT OFFICE.-

WILLIAM H. SALYERS, DOING BUSINESS AS cnnwnnr. & SALYERS, OF'MALV'EIBQN,

IOWA. p

SCOOP-ATTAC HING MEANS FOR GRADING 'AND EXCAVATING MACHINES;

To all whom it may concern:

Be it known that I, PHINEA$ M. CADWELL, a citizen of the United States,residin at Malvern, .in' the county of Mills and tate of Iowa, haveinventedjcertain new and useful Improvements in Scoop-Attaching Meansfor Grading and- Excavating Machines, of which the following is aspecification.'

The invention relates in general to a grading orexcavating apparatusofthe type disclosed in my Patent No. 1,355,938issued October 19,1920;and has more particular reference to a device for detachably securingthe scoops of the apparatus to the actuating cable;

The object of my invention is to provide a device of the characterindicated which is of -a relatively simple character, is durable and iscapable of efiectively securing the clamps to the cable.

A further object of the invention is to provide a cable attaching devicewhich shall presenta minimum amount of resistance to the movementthereof along the surface of the earth and which is not likelyto becomeaccidentally unfastened from the cable by reason of its contact'withobstructions in the path of movement of the device.

A further object of the invention is to provide a securing means whichis capable of being quickly andeasily operated to attach and detach thescoops from the cable.

' In :the accompanying drawings I have illustrated a preferredembodimentof the invention, but I recognize [that various Changes may be made inconstruction and arrangement without departing from the spirit and scopeof the invention as ex,- pressed in the appended claims.

In Fig. 1 of the drawings, I have shown in perspective a scoop securedto a cable by means of a device constructed in accordance with theinvention. Figs. 2 and 3 are respectively side and edge elevations ofthe device. Fig. at is a sectional view taken on line 44 of Fig. 2.Figs..5 and 6 are perspective views of the operating lever and itsreplaceable gripping jaw, detached.

' Referring first to Fig.1, 1 designates the actuating'cable of agrading or excavating apparatus such as that illustrated and des'cribed'in my patent above referred to; and 2 indicates a scoop whichis to be secured Specification of Letters Patent. Patented Mar, 21,'1922 Application filed August 5, 1920. Serial No. 401359. V

to the cable by my improved securing devlce, designated generally by thenumeral 3.

The securing device 3 comprising gener ally a base plate 4 ofsubstantial length and thickness, and having a flat face 5. At the loweredge of the plate 4 there is provided a shoe 6,'which is made integralwith the plate and projects outwardly therefrom a substantial distance.This shoeis shaped upon its under side to provide a fiat sliding surfaceand rounded ends; and upon itsupper side the shoe has a groove 7- forreceiving thecable 1. I V ,5 The means, for coactin v with the shoe 6 tohold the cable against movement with reference thereto comprises a handlever 8 having at its inner end a'rounded .enlar ment or disk 9apertured at 10 eccentricaIly thereof to receive a bearing stud 11. Thisstud. is cast integral with the plate A and i i extends outwardly fromthe flat face 5 of the plate a distance approximately equal to the widthof the shoe 6. Rigid with the rounded portion 9 of the lever is a member12 arcuate in form and having serrated or toothed edges 13 upon itsperiphery adapted to engage with the cablelying in the groove 7.This'member 12 may, if desired, be made separately from the lever8 sothat it may be renewed from time to time .as it becomes worn in use. Tothis end theinner side of the enlarged portion 9' of'the lever is cutaway as shown at 14 (Fig. 5), and

the member 12 is made rigid-with a plate I 15 apertured at 16 to receivethe stud 11.

The member 12 is made of substantially greater thickness than the plate15, or approximately equal to the combined'thickness of the portion 9and plate 15, and the portion 9 of the lever is cut away as at 17 so asto receive the member 12. Moreover, one edge 18 of the plate 15 isadapted to engage with a shoulder 19 provided in cutting away the lever8 to form the portion 9. The

bearing stud 11 is apertured to receive a IVhen the parts are thusoperatively assomade of ciated, it will be apparent that the member l fli s made rigid with the lever 8, being held a" trelatlve niovement. byreason of its inter tting en agement with the cut away portion 17 of t eportion 9 of the lever, and also by vthe engagement-of theedge 18 of theplate 15 withthe shoulder 19..

provide fer the attachment of the device to the scoop, the base platehas a rearwardly extending portion 21, preferably adually increasinthickness (Fig."3l. hisportion 21 is s otted as at 22 to receive theforeniost link of the scoop chain 23, and a bolt 24 is passed throughapertures 25 and across the slot for attaching the'chain tothe device. e

The parts are so proportioned and arranged thaflwhen the cable isgrippedbetween the shoe 6 and the merhber 12, the handle 8 egitendsin arearward directionso that if the travel of the cable the lever sliiiuldengage with an obstruction, itjwill nierely tend to tighten its grip onthe cable rather than to be swung into its inoperative orreleasingfposition. Moreover, the mounaag oi, the member 12 withreference tothe pivot 20 is such that the forvvardpull of the cabletends tp move the member 12 toward the shoe 6 and hence intoengageinentwith the cable 1. e b It willfbe apparent that I haveprovideda securing device for thefscoops of a gradingor excavating apparatuswhich is of a highly practical character. The constructibn iS relativelysimple andyet is of such arugged nature as to be very strong and dili'ae. im "ortant advantage is "that the device is part cularly adapted fortravel the cab le Thus when the device occupiesits'nbnnal position in'use the shoe "6 serves teslidably support thedevice upon ttegr nna, a eshap of the shoebeingsuch a'sto "oifer a minimum amount of resistance toheftraveiof the device withfthe cable. If, however, thedevice'shouldassume an injxtertetl positionjsojthat it rests on the handie 8,fasithappens when the cableis'raised above-the round, the handle,by reason ofiiat' it extends downwardly and rearwardlvtends to move the member 12 soas to tighten its urtherniore, any obstructions engagiii with j tliehandle in, its travel merely ten to tiglitenthe grip of the device uponthe table,

Itwill also' be that the shoe, in addition 'to 1ts function as such, isso arranged .onTthe1plate4 as to coact in an advantageous manner withthe member 12 and lever 8 for eifectively securing the cable against.movement with. reference to e the device.. \Vheuit is desired to releasethe derice from the cable, as when the scoop has been dumped, this naybe readily accomplishedby the operation of the lever 8, as

'rip upon the cable.

may also be the attachment of the device to the oppositely travelingstrand of the cable for the returner the scoop.

I claim as my invention: I e;

1. In excavating or grading apparatus and the like,'means for detachablysecuring an excavating scoop to'an actuating cable. comprising a baseplate havingupon one edge a portion of substantial thickness providingasli'oehavinga fiat face upon which .the base plate may slide over theground, a

lever pivoted upon the .baseplate adjacent saidshoeand havingrigidtherewith ajiiiember'niovable towardthe inner side of "said shoe soasto grip a cable between itand the shoe, .said plate having at its rearenda portionslotted to receive the link of achain connected with saidscoop and 'apertuifedfto receive a bolt adapted to be passed'throughsaid link -whereby. to detachably secure the. chain to the plate. a

p p "2. a grading or excavating apparatus, nieans l fordetachablysecuring an excavating-1 scoop tojan actuating cable comprising} baseplatehaving upon one edge; an integral portion of substantially greaterthickness than the plate proper whereby to provide a shoe'liavinga'flat'underside upon which the plate may slide over the ground in use,alever pivoted upon the base plate and having eccentrica'lly of itspivot a rigid member movable toward the inner-side ofsaid 'sh oe so asto grip the cable between it and; the shoe andmeans at the rear edge ofsaid plate for'conn'ecting the scoop to the plate. 7 t

3. In acable; grading or excavating appiia ratus,;i1 1eans 'fordetachably securing an ex"- cavating scoop to the actuating cablecornprising a base plate havingajflat face stud rising froin said face,said plate and stud having an aperture therethrough,"one edge of saidplateha'ving'a portion projecting from said flat fiLCef a lever having arounded portion at its inner endinounte d eccentrically upon said stud,a .disk fals o mounted eccentrically on'said stud having a member rigidtherewith so as to be movable toward and froinsaid projecting portionofthe base plate, said disk and its rn'eniberIbeing adapted tointerengagewith thelrounde d portion of the lever whereby to. be heldagainst relative rotation, a bolt. entered through saidaperture inthebase plate and js'tud for clamping the lever'in position upon the baseplate while maintaining the disk operativeassociation with the lever,"and means at the rear endof the base plate for detachablysecuring it tothe scoop. h

A. A device for detachably securing a scoop of a road grading orexcavating apparatus. to an actuating cable comprising, in combinationpabase plate of-substantial lengthlhaving a fiat face and at one edgea fixdi e f qnp r di g em. d a e, a a bearing stud also protruding from saidflat face a distance substantially equal to the protrusion of the jawportion, a hand lever having at its inner end a disk portioneccentrically mounted on said stud and having rigid therewith a jawportion movable in the operation of the lever toward and from the fixedjaw portion on the base plate, a bolt entered through said stud and thebase plate for securing the hand lever in operative position upon thebase plate, said handle being adapted when in clamping position toextend in a rearward direction with reference to the base plate, andmeans at the rear end of the base plate for detachably securing thescoop thereto.

In testimony whereof, I have hereunto set my hand.

v'PHINEAS M. CADWELL.

